文献类型：期刊文献

英文题名：Degradation behaviors and crystallization of rapidly degradable polylactic acid prepared by melting through coordination complexation reaction

作者：Xu, Mengxia Xia, Xiaosong Luo, Zhu Liao, Jingshun He, Ruhui Yang, Shenglong Yang, Le

第一作者：Xu, Mengxia

通信作者：Luo, Z[1];Yang, L[2]

机构：[1]Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Guiyang 550025, Peoples R China

第一机构：Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China;corresponding author), Guizhou Inst Technol, Guiyang 550025, Peoples R China.|贵州理工学院;

年份：2024

卷号：38

外文期刊名：MATERIALS TODAY COMMUNICATIONS

收录：;EI(收录号：20235115245889);Scopus(收录号：2-s2.0-85179847302);WOS:【SCI-EXPANDED(收录号:WOS:001140542600001)】；

基金：This work was financially supported by Science and Technology Plan Project of Guizhou Province (Qian Ke He JiChu ZK [2022] 185) , the Youth Science and Technology Project of Guizhou Provincial Education Department (Qian Jiao He KY [2022] 354) and the Special Project of Academic New Seedling Cultivation and Innovation Exploration of Guizhou Institute of Technology (GZLGXM-23) .

语种：英文

外文关键词：Polylactic acid (PLA); Lewis acids; Degradation behavior

摘要：The nondegradability of petroleum-based non-degradable plastics leads to accumulation of a large amount of waste. The waste disposal method seriously pollutes the environment. The development and application of biodegradable polymers are considered as a green solution to the problem of environmental pollution. However, as the market for degradable materials continues to expand, the rate of production largely exceeds the rate of natural degradation, and the waste accumulation problem cannot be effectively addressed. In this study, PLAmodified materials were prepared by a melt blending method with polylactic acid (PLA) as a matrix material and stannous octoate (Sn(Oct)2) as an accelerator to increase the degradation rate of PLA. The Sn atom in Sn (Oct)2 complexed with the ester group of the PLA molecular chain, leading to destruction of the PLA molecular chain. When the content of the accelerator reached 2 phr, the degradation rate of the modified samples in an alkali solution was more than two times higher than that of the pure PLA, and the biodegradation rate was increased by 73.97% compared to the pure PLA. In addition, the crystallization behavior of PLA can be regulated by Sn(Oct)2. The mechanisms of the acceleration of the degradation and effect on the crystallization behavior were investigated.